The USGS National Geospatial Program is again updating the US Interagency Elevation Inventory. If you have elevation data, they would like you to give them information so that your data is discoverable by others. Your data need not be in the public domain, and the entry will provide a link to inquire about the data, or to a download site if available. This is not a repository for data; it is a way to make data findable.
Click here for more information and links on the CGIA website.